.czi closeup was processed and exported using ImageJ Fiji. Scale bar was taken from "ScaleBar_0.63x-20.5x.czi". The 1 mm line
was imaged using the same magnification settings as for the closeup picture. Pictures of light-masks and printed gels were taken with a 
camera and processed (white balance, brightness/contrast level) using Adobe Photoshop. Image was assembled in Adobe Illustrator.